Optical Interface to an Electrical Central Office.
DEPARTMENT OF THE ARMY WASHINGTON DC
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The configuration for one embodiment of an interface unit includes block elements that will accommodate the translation of individual functions between one optical domain and the other electrical-metallic domain. At the optical input port, are optical fibers which are fed to the optical to electrical transducer elements, to be described herein. Following this step, the resulting electrical signals are fed to electronic amplifier units. The analog electrical signals, representative of the modulated light input signals, are next useable in ring sender, off-hook detector, ring frequency generator, closure generator, and ring detector electrical units, e.g. a hybrid device, light generator, and optical modulator are among the included devices that perform the inverse function, converting from analog electrical into modulated light signals, for later transmission over the optical fiber lines. Also included are optical junction devices which serve to join together light from several optical fiber lines in a summation like process. Author
- Non-Radio Communications